Disclosed are a thermometer (10) capable of being used for a feeding bottle (50) and a milk reconstitution assembly using the thermometer (10). The thermometer (10) uses a vegetable oil as a temperature sensing medium (16). One end of a capillary tube (12) of the thermometer is connected to a liquid storage bubble (14), the other end thereof extends to form a burst-proof chamber (18) with a larger cross section, and the vegetable oil is sealed in a cavity composed of the capillary tube (12), the liquid storage bubble (14) and the burst-proof chamber (18). When the measured temperature is higher than the maximum of a temperature scale on the capillary tube (12), the vegetable oil enters the burst-proof chamber (18), so that the capillary tube (12) can be prevented from bursting. When being used in the feeding bottle (50), the thermometer (10) is nontoxic and harmless. In particular, when the thermometer (10) is sterilized by boiled water, because the temperature is relatively high, the vegetable oil expands and enters the burst-proof chamber (18), thereby avoiding the bursting of the capillary tube (12) and in addition, as the cross section of the burst-proof chamber (18) is larger, it may not cause the thermometer (10) to be too long to be used in the feeding bottle (50). The milk reconstitution assembly comprises the thermometer (10). Using the thermometer (10) to measure water temperature or milk temperature not only has no influence on the use of the milk reconstitution assembly, but also has an extreme convenience.Linvention concerne un thermomètre (10) pouvant être utilisé pour un biberon (50), et un ensemble de reconstitution de lait utilisant le thermomètre (10). Le thermomètre (10) utilise une huile végétale comme milieu de détection de température (16). Une première extrémité dun tube capillaire (12) du thermomètre est reliée à une bulle de stockage de liquide (14), son autre extrémité sétend pour former une chambre anti-éclat (18) ayant une section transve